Herbal distillate

Hydro-Distillation Process in Extracting Of Agarwood Essential Oil.

Herbal distillates, also known as floral waters, hydrosols, hydrolates, herbal waters, and essential waters, are aqueous products of hydro distillation. They are colloidal suspensions of essential oils as well as water-soluble components obtained by steam distillation or hydrodistillation (a variant of steam distillation) from plants/herbs. These herbal distillates have uses as flavorings and cosmetics (skin care).

Production

Herbal distillates are produced in the same or similar manner as essential oils. However, the essential oil will float to the top of the distillate where it is removed, leaving behind the watery distillate. For this reason perhaps the term essential water is more descript. In the past, these essential waters were often considered a byproduct of distillation, but now are considered an important co-product.[1] The produced herbal waters are essentially diluted essential oils at less than 1% concentration (typically 0.01% to 0.04%).[2]

Usage

Cosmetics and toiletries makers are finding many uses for herbal distillates. Distillates are also used as flavorings and curables.

Science

The science of distillation is based on the fact that different substances vaporise at different temperatures. Unlike other extraction techniques based on solubility of a compound in either water or oil, distillation will separate components regardless of their solubility. The distillate will contain compounds that vaporize at or below the temperature of distillation. The actual chemical components of these orange herbal distillates have not yet been fully identified, but plant distillates will usually contain essential oil compounds as well as organic acids and other water-soluble plant components. Compounds with a higher vaporization point will remain behind and will include many of the water-soluble plant pigments and flavonoids.

Because hydrosols are produced at high temperatures and are somewhat acidic, they tend to inhibit bacterial growth but not fungal growth. They are not sterile. They are a fresh product, like milk, and should be kept refrigerated.[3] Small-scale producers of hydrosols must be particularly aware of, and take steps to prevent bacterial contamination.[4]

See also

References

  1. ↑ "What are Hydrosols?". Hydrosol World. Retrieved 5 April 2016.
  2. ↑ National Association for Holistic Aromatherapy. What are Hydrosols. Accessed 12-5-13
  3. ↑ Cindy Jones. "Herbal Waters or Distillates (Hydrosols)". Sagescript Institute. Archived from the original on 2006-10-28. Retrieved 2006-10-23.
  4. ↑ Martin Watt. "Hydrosols or Distillation Waters: Their Production, Safety, Efficacy and the Sales Hype". Archived from the original on 2013-03-20.

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